3. Compiling DAO from sources

Developers can refer to the following guide, which provides various options for manually compiling DAO sources, allowing them to tailor the process according to their specific needs.

3.1. Getting the sources

Data accelerator offload (DAO) sources can be downloaded from:

# git clone https://github.com/MarvellEmbeddedProcessors/dao.git
# cd dao
# git checkout dao-devel

3.2. Installing Dependencies

Before compiling DAO, install the required packages:

# apt-get update
# apt-get install -y \
  build-essential gcc-14 ninja-build meson git \
  wget flex bison check file \
  pkg-config libssl-dev libsystemd-dev \
  libnl-3-dev libnl-route-3-dev libnl-xfrm-3-dev \
  libarchive-dev libbsd-dev libbpf-dev \
  libfdt-dev libjansson-dev zlib1g-dev \
  doxygen sphinx-common python3-sphinx-rtd-theme \
  python3-pip python3-setuptools python3-wheel python3-pyelftools \
  gcc-aarch64-linux-gnu g++-aarch64-linux-gnu

3.3. Compiling and Installing

When compiling for the Octeon platform, DAO has a mandatory dependency on DPDK and gRPC.

Note

Steps to build DPDK and gRPC are as follows: (Steps are for natively compiling DPDK and gRPC on ARM based rootfs)

# Build DPDK
git clone https://github.com/MarvellEmbeddedProcessors/marvell-dpdk.git
cd marvell-dpdk
git checkout dpdk-24.11-release
meson build -Dexamples=all -Denable_drivers=*/cnxk,net/ring -Dplatform=cn10k –prefix=${PWD}/install
ninja -C build install
# Build gRPC
cd <Path to DAO repo>/dao
export GRPC_BUILD_DIR=/tmp/dao-deps-build
./ci/build/build-deps.sh $GRPC_BUILD_DIR <git user name> cn10k grpc
export PATH=$GRPC_BUILD_DIR/deps/deps-prefix/host/bin:$PATH
export LD_LIBRARY_PATH=$GRPC_BUILD_DIR/deps/deps-prefix/host/lib:$LD_LIBRARY_PATH
export PKG_CONFIG_PATH=”$GRPC_BUILD_DIR/deps/deps-prefix/ep/lib/pkgconfig:$GRPC_BUILD_DIR/deps/host/grpc/third_party/re2:${PKG_CONFIG_PATH:-}”

3.3.1. Native Compilation

Compiling on ARM server for CN10k platform

# cd <Path to DAO repo>/dao
# meson build -Dplatform=cn10k --prefix="${PWD}/install" -Denable_kmods=false -Dprefer_static_build=true --prefer-static
# ninja -C build install

Compiling on x86 machine

# cd <Path to DAO repo>/dao
# meson build --prefix="${PWD}/install" -Denable_kmods=false
# ninja -C build install

Note

To link dpdk library statically, meson option --prefer-static shall be used. To build only static DAO libraries, use -Dprefer_static_build=true.

3.3.2. Cross compilation

Setup the toolchain and follow the below steps.

# cd <Path to DAO repo>/dao
# PKG_CONFIG_LIBDIR=/path/to/dpdk/build/prefix/lib/pkgconfig/ meson setup --cross config/arm64_cn10k_linux_gcc build -Dprefer_static_build=true --prefer-static
# ninja -C build

3.4. Compiling the documentation

Install sphinx-build package. If this utility is found in PATH then documentation will be built by default.

3.5. Meson Options

kernel_dir: Path to the kernel for building kernel modules (octep_vdpa). Headers must be in $kernel_dir.

dma_stats: Enable DMA statistics for DAO library

virtio_debug: Enable virtio debug that perform descriptor validation, etc.

enable_host_build: Enable the host build for the DAO library. This option compiles only the components necessary for the host environment.